CC3100: During AP disconection Command sl_ExtLib_MqttClientCtxDelete failed for qos 1 messages

max sh.

Part Number: CC3100

Hi,

i use sdk 1.3.0 and my question is why sl_ExtLib_MqttClientCtxDelete() failed when the wifi connection was droped by AP and there is a pennding qos1 message without clean session.

The flow was:

Device connected to some mqtt broker and send data to topic with qos1.
Suddenly AP drop a connection of the specific device for few minutes.
sl_ExtLib_MqttDisconn callback receved
Code call sl_ExtLib_MqttClientCtxDelete that return -1
- mqtt_client_ctx_delete -> awaits_pkts -> client->qos_ack1_wl.head <-- is true

How to free the mutex or restart the connection when the AP available
Maybe during clean = false i shouldn't delete the context?

Thanks

10 months ago

0 Shlomi Itzhak 10 months ago

TI__Guru 60835 points

Hi,

It may be that the AP is disconnected but the application upper layers still have data.

This is why the code is waiting to get connected to the broker again and once it is done, the Broker connection is also established.

sl_ExtLib_MqttClientCtxDelete(((connect_config*)(RecvQue.hndl))->clt_ctx);

if(!IS_CONNECTED(g_ulStatus))
{
UART_PRINT("device has disconnected from AP \n\r");

UART_PRINT("retry connection to the AP\n\r");

while(!(IS_CONNECTED(g_ulStatus)) || !(IS_IP_ACQUIRED(g_ulStatus)))
{
osi_Sleep(10);
}
goto connect_to_broker;

}

Shlomi